Door handle adapter



FIG. 1 is a top plan view of a door handle adapter embodying my new design;

FIG. 2 is a side elevational view taken from the bottom of FIG. 1, the side opposite being a mirror image;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top perspective view thereof;

FIG. 5 is a bottom perspective view thereof;

FIG. 6 is a left end elevational view thereof; and,

FIG. 7 is a right end elevational view thereof. 

The ornamental design for a door handle adapter, as shown and described. 